2 pipes X and Y fill a tub in 10 min and 15 min resp. Both are opened and at the end of 5 minutes X is turned off. How much time will the tub take to fill

1. 3/2 min

2. 1/2 min

3. 1/2 min

4. 5/2 min

View Answer

Correct Answer :

5/2 min

Explanation :
No Explanation available for this question

Walking at 2/3 of his usual speed a man is 2 hrs.late. Find his actual travel time

1. 8 hrs

2. 4hrs

3. 3hrs

4. none of these

View Answer

Correct Answer :

4hrs

Explanation :
No Explanation available for this question

A train after travelling 30 km from X meets with an accident and proceeds at 3/4 of the former speed and reaches by 45 min. late. Had the accident happened 10 kms further one, it would have arrived 15 min sooner. Find the original speed and distance.

1. 60km

2. 30 km

3. 50 km

4. 20 km

View Answer

Correct Answer :

60km

Explanation :
No Explanation available for this question

A cat sees a rat 50 metres away from her and moves in the opposite direction at a speed of 12 km/hr. A minute later the rat sees her and gives chase at a speed of 15 km/hr. How soon will the rat overtake her

1. 5 min

2. 6 min

3. 2 min

4. 12 min

View Answer

Correct Answer :

5 min

Explanation :
No Explanation available for this question

3 pipes can fill a reservoirin 10,15 and 20 hrs. resp. The first was opened at 5 a.m. , the second at 6 a.m., third at 7 a.m. When will the reservoir the filled

1. 5:20a.m.

2. 6:30 a.m.

3. 10:20 a.m.

4. 4 p.m.

View Answer

Correct Answer :

10:20 a.m.

Explanation :
No Explanation available for this question

the radii of 2 cylinders are in the ratio 3:4. Their heights are in the ration 2:3. The ratio of their volumes is

1. 1:2

2. 2:1

3. 3:4

4. 2:3

View Answer

Correct Answer :

1:2

Explanation :
No Explanation available for this question

If a train runs at 20 km/hr, it reaches its destination late by 10 min. But if it runs at 30 km/hr, it is late by 2 min. only. The correct time for the train to complete its journey is:

1. 12 min

2. 8 min

3. 14 min

4. 4 min

View Answer

Correct Answer :

14 min

Explanation :
No Explanation available for this question

A student, instead of finding the value of 7/8th of a number, found the value of 7/18th of the number. If his answer differed from the actual one by 770, find the number.

1. 1584

2. 2520

3. 1728

4. 1656

View Answer

Correct Answer :

1584

Explanation :
No Explanation available for this question

P and Q are two integers such that P Q = 64. Which of the following cannot be the value of P + Q?

1. 20

2. 65

3. 16

4. 35

View Answer

Correct Answer :

Explanation :
No Explanation available for this question

If m and n are integers divisible by 5, which of the following is not necessarily true

1. m - n is divisible by 5

2. m2 - n2 is divisible by 25

3. m + n is divisible by 10

4. None of these

View Answer

Correct Answer :

None of these

Explanation :
No Explanation available for this question

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